YASKAWA Varispeed E7 User Manual

2-18
To prevent the braking unit/braking resistor unit from overheating, design the control circuit to turn OFF the
inverter output using the thermal overload relay contacts of the Unit as shown in Fig 2.7.
200 V and 400 V Class Inverters with 0.4 to 18.5 kW Output Capacity
200 V and 400 V Class Inverters with 22 kW or higher Output
Fig 2.7 Connecting the Braking Resistor Unit and Braking Unit
Connecting Braking Units in Parallel
When connecting two or more Braking Units in parallel, use the wiring and jumper settings like shown in Fig
2.8. There is a jumper for selecting whether each Braking Unit is to be a master or slave. Select “Master” for
the first Braking Unit only, and select “Slave” for all other Braking Units (i.e., from the second Unit onwards).
Fig 2.8 Connecting Braking Units in Parallel
Inverter
LKEB Braking
Resistor Unit
Thermal overload
relay trip contact
CDBR Braking
Unit
Thermal protector
trip contact
1
Inverter
LKEB Braking
Resistor Unit
Thermal overload
relay trip contact
CDBR Braking
Unit
Thermal protector
trip contact
Inverter
Thermal overload relay contact
Thermal overload relay contact
Thermal overload relay contact
Braking
Resistor
Unit
Braking
Resistor
Unit
Braking
Resistor
Unit
Level detector
Braking Unit #2
Braking Unit #3
Braking Unit #1
Thermal overload relay
contact
Thermal overload relay
contact
Thermal overload relay
contact
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YASKAWA Varispeed E7 Specifications

General

Brand	YASKAWA
Model	Varispeed E7
Category	DC Drives
Language	English